package com.jiafeng.netty;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;

/**
 * @program: nettydome
 * @description: 实现客户端发送一个请求，服务器会返回hello netty
 * @author: Mr.jia
 * @create: 2019-02-08 19:05
 **/
public class helloNetty {
    public static void main(String[] args) throws Exception{
        //定义一对线程组，用于接受客户端的连接，但是不做任何处理，跟老板一样，不做事
        //主线程组
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        //定义从线程组，从线程组，老板线程组会把任务丢给他，让手下线程组去做任务
        EventLoopGroup wokerGroup = new NioEventLoopGroup();




        try {
            //netty服务器的创建，ServerBootstrap是一个启动类
            ServerBootstrap serverBootstrap = new ServerBootstrap();

            serverBootstrap.group(bossGroup,wokerGroup ) //设置主从线程组
                    .channel(NioServerSocketChannel.class) //设置nio的双向通道
                    .childHandler(new HelloServerInitializer());   //子处理器，用于处理wokerGroup

            //启动server，并且设置8088为启动的端口号，同时启动方式为同步
            ChannelFuture channelFuture = serverBootstrap.bind(8088).sync();

            //监听关闭的channe1，设置为同步方式
            channelFuture.channel().closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            wokerGroup.shutdownGracefully();
    }
    }
}
